Is AlphaZero an example of an AGI?
Good question!


AlphaZero, though a major milestone, is most definitely not an AGI :)


AlphaGo, though strong at the game of Go, is narrowly strong ("strong-narrow AI"), defined as strength in a single problem or type of problem (such as Go and other non-chance, perfect information games.) 


AGI, at minimum, must be about as strong as humans in all problems worked on or solved by humans.  


AGI is often associated with superintelligence, defined as intelligence that surpasses human levels.

AGI does not necessarily imply super-intelligence, in the sense that we'd consider an android that can perform all human activities with the same capability as humans as an Artificial General Intelligence.  

But technically, AlphaGo is a narrow superintelligence in that it exceeds all human performance in a single problem.